The four images (scroll through above to view them) are of the Lee Valley White Water Centre (which will host the canoe slalom), Lord's cricket ground (archery), Greenwich Park (equestrian) and Horse Guards Parade (beach volleyball).

All four of these Olympic venues will require temporary seating for the Games and the images provide evidence of the work needed to be done to change the sites from their existing state to bona fide venues capable of hosting their events.

In total, the overlay project for the Games will include some 250,000 temporary seats, 165,000 square metres of tents, 2,500 cabins, 140 kilometres of fencing and 250 kilometres of crowd barriers.

Ticketing and session-by-session details were released earlier this week with the beach volleyball event likely to be one of the more oversubscribed due to the exotic nature of the sport and its glamorous location in the heart of Whitehall.

James Bulley, LOCOG director of venues and infrastructure, said: "The London 2012 Games will deliver what no other Games has before in terms of the complexity and scale of the event overlay and temporary structures needed.

"Alongside the absolute commitment to meet the Games requirements, central to our plans have been legacy, sustainability, accessibility and safety.

"Our vision for the London 2012 venues is the integration with London's historic and iconic landmarks alongside our existing world class stadiums and sporting arenas. Our combined overlay team are world class and will deliver the technical excellence required to make this a spectacular Games."